LD56100DPU175R STMicroelectronics Integrated Circuit (Other) In Stock
STMicroelectronics LD56100DPU175R is a 1 A ultra-low noise, very low dropout fast-transient linear regulator operating from 2.25 V to 5.5 V input. With a 0.22 V typical dropout voltage and excellent 0.006% load regulation, it is ideal for noise-sensitive RF, analog, and precision sensor applications.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- LD56100DPU175R Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LD56100DPU175R?
- Ultra-low noise output with only 0.006% load regulation and 0.0029% line regulation for precision analog and RF supply rails
- Very low 0.22 V typical dropout voltage at 1 A output enables efficient operation from 2.25 V to 5.5 V input rails
- Fast transient response minimizes output voltage deviation during rapid load steps, protecting sensitive downstream analog and RF circuits
What is LD56100DPU175R used for?
The LD56100DPU175R is well suited for powering RF transceivers, precision ADCs, low-noise amplifiers, and sensor front-ends where supply noise must be kept below 10 µV RMS. Its fast transient response and 1 A current capability make it a direct fit for 3.3 V and 1.8 V digital core rails in FPGAs and DSPs that demand tight load regulation during burst processing. The compact 8-pin SOIC package and 2.25 V minimum input voltage support both 3.3 V and 5 V supply domains in industrial and communications equipment.
What are the specifications of LD56100DPU175R?
| YTEOL | 7.3 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.295V |
| Dropout Voltage1-Nom | 0.22V |
| Input Voltage Absolute-Max | 7V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.25V |
| JESD-30 Code | R-PDSO-N8 |
| Line Regulation-Max | 0.0028875% |
| Load Regulation-Max | 0.006% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.7675V |
| Output Voltage1-Min | 1.715V |
| Output Voltage1-Nom | 1.75V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.05,16 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Voltage Tolerance-Max | 2% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Where can I find the LD56100DPU175R datasheet?
LD56100DPU175R Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for LD56100DPU175R?
Compatible alternatives and drop-in replacements for LD56100DPU175R:
Frequently Asked Questions
What is the dropout voltage and input voltage range of the LD56100DPU175R at full 1 A load?
At full 1 A output, the LD56100DPU175R has a typical dropout voltage of 0.22 V and a maximum of 0.295 V, with an input voltage range of 2.25 V to 5.5 V. This low dropout allows the regulator to maintain output regulation even when the input rail is only 0.22 V above the output, extending battery runtime in portable designs.
How does the LD56100DPU175R's load and line regulation performance benefit precision analog circuit designs?
The LD56100DPU175R achieves a maximum load regulation of 0.006% and line regulation of 0.0029%, which translates to output voltage variation of less than 1 mV across the full 1 A load range on a 1.75 V output. This level of precision is critical for powering 16-bit or 24-bit ADC reference or supply rails where millivolt-level supply noise directly degrades conversion accuracy.
Which package does the LD56100DPU175R use, and how does it compare to alternative 1 A LDOs for PCB space efficiency?
The LD56100DPU175R is housed in an 8-pin SOIC (R-PDSO-N8) package, which measures approximately 4.9 mm x 3.9 mm and offers straightforward PCB routing compared to smaller DFN or WLCSP alternatives. For designs where 8-pin SOIC footprint is acceptable, it provides an easy drop-in solution compared to 1 A LDOs in WLCSP packages that require via-in-pad PCB processes.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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